Signals from the SNS cause the heart rate to _________, while signals from the PNS cause the heart rate to ___________. Signals from the SNS cause smooth muscles of the intestine to _________ contractions, while signals from the PNS cause these muscles to _________ contractions. Signals from the SNS also cause the adrenal gland to _________ epinephrine and norepinephrine. 3.Neurons can excite or inhibit another neuron.

Exciting another neuron will increase the chances of a/an ___________________ in the second neuron. Inhibiting another neuron will make the chances of a/an __________________ less likely. 4.Axons from one neuron can synapse with the dendrites or soma of another axon. These synapses are called ______________________ (on dendrites) and _________________________ (on soma). They carry input signals to the other neuron. Axons from one neuron can synapse with the axon terminal of another neuron. These synapses are called ________________________, and they regulate the amount of ________________________ released by the other neuron. 5.The electrical synapse:

Electrical current flows from one neuron to another through _________________. These synapses are always (excitatory or inhibitory). Advantages of the electrical synapses:
1._______ signal conduction
2._____________ activity for a group of neurons.6.The chemical synapse:Chemical synapses are...

YOU MAY ALSO FIND THESE DOCUMENTS HELPFUL

...NAME ________________________________
Explore the Neuroscience for Kids Web Site (ANSWERS) Start at: http://faculty.washington.edu/chudler/neurok.html
On the left side, click on “Explore,” then click on “The Neuron,” then click on “Millions and Billions of Cells: Type of Neurons” to answer the following questions:
1. A neuron is a ___NERVE___ cell. The brain is made up of about _100__billion neurons. 2. Neurons are similar to other cells in the body in some ways such as: a. Neurons are surrounded by a ________MEMBRANE_______________________. b. Neurons have a ______NUCLEUS____________ that contains __GENES______. c. Neurons contain cytoplasm, mitochondria and other ___ORGANELLES_________. 3. However, neurons differ from other cells in the body in some ways such as: a. Neurons have specialized projections called ____DENDRITES_____ and ___AXONS_. b. Dendrites bring information to the ___CELL BODY__. c. AXONS_take information away from the cell body. d. Neurons communicate with each other through an ___ELECTROCHEMICAL__process. 4. Neurons form specialized connections called ____SYNAPSES_______ and produce special chemicals called ____NEUROTRANSMITTERS__________ that are released at the synapse.
Scroll down to the chart comparing axons and dendrites. Fill in the answers:...

...how an impulse travels down a neuron. How does that impulse get from one neuron to another? Describe how caffeine affects neurotransmitters.
A nerve cell or a neuron is the core component of the nervous system. They send and receive messages and impulses throughout the body. These messages allow us to remember, learn, move, and perceive our surroundings.
Impulses travel down a neuron and then from one neuron to another all throughout the body. In order for an impulse to make it to other regions of the body, the signal has to be timed properly and strong enough in order to be turned into action potentials. A stimulus is what generates a nerve signal and can be caused by a chemical signal from another neuron, sound, touching a hot surface, ext. These signals are received at the flared end of the neuron called a dendrite. Here, the neuron processes chemical signals from other nerve cells. Once processed as strong enough to be action potentials they move to the axon (cell body) and continue on through the neuron. It then travels through the neurons supporting cells, the myelin sheath. Finally the impulse ends at the synaptic terminals, the little branches at the end of an axon that allow the impulse to be sent to their destination.
Once the impulse arrives at the end of one neuron it needs...

...will explain how neurons transmit information in the human body and secondly I will discuss how knowing how neurons function within our bodies helps us understand different aspects of human behaviour. I will be using information gathered from Book 1 (Mapping Psychology).
External and internal factors and conditions are detected by the body’s nervous system. These changes are detected, interpreted and responded to. By sending electrical andchemical impulses the nervous system sets in place reactions to counteract these conditions. An example of this is if you where to place your foot on a sharp object, pain is detected by nerves or receptors in your foot and send a message through your foot, leg and into your spinal cord and into the brain which forms part of your central nervous system. This signal is interpreted by the brain and the appropriate signal is sent to react to the pain. The majority of the brain is made up of specialized neurons. They interact to control the five senses.
Different types of stimulation are necessary to stimulate different types of neurons. A neuron is made up of three basic parts: a cell body (soma) that contains the nucleus, dendrites, which are branches off the cell body that are there to receive impulses and signals and a long axon that carries impulses away from the body and on to surrounding neurons. The fluid inside a neuron...

...﻿Neurons are cells used to perceive the outside environment, the internal environment within themselves, to formulate behavioral response to those signals, and to send that information to other neurons, muscles, or glands. All information comes into a neuron through the dendrite, flows through the neuron and then leaves to go to the next neuron through the axon. Neuron communication does not rely on a single entity but entrusts several different processes that involve the contribution of neuron structure, electrical and chemicalsynapse, as well as neurotransmitters.
Nerve cells are the basic functioning component in the nervous system. Every part of the system is comprised of neurons that collect and distribute information to make the body function. All neurons consist of four main components; a soma, dendrites, an axon and its terminals. The soma is a cell body enclosing a nucleus and other organelles necessary for a functioning life, while supervising the metabolic activity of the neuron. Dendrites are branched processes that receive electrical impulses from surrounding neurons. The axon is a long projection that transmits electric signals, called action potentials, over long distances. The axon terminals are positioned at the end of the axon. These terminals are in close proximity to the...

...respiratory depression. This is when ventilation is inadequate and cannot perform the needed gas exchange.
Gastric lavage- This means having to pump someone’s stomach or irrigate it. The doctor would put a flexible tube down the throat and would suck out the contents and rinse out the stomach with a saline solution.
Oxygen saturation- this is the amount of oxygen in the hemoglobin in the body. Or the percentage of hemoglobin binding site in the bloodstream occupied by oxygen.
2. How many elements are contained in a molecule of Tetrodatoxin? What are the names of these elements?
There are four different elements and they are 11 carbon, 17 hydrogen, 3 nitrogen and 8 oxygen.
3. What types of chemical bonds are found in this molecule? Describe the structure of those bonds.
The chemical bonds found are covalent bonds, which are bonds that share electrons.
4. As mentioned in the case description, tetrodotoxin is a molecule that blocks voltage-gated sodium ion channels. Describe the structure of a sodium ion.
A sodium ion is a sodium ion that has been oxidized, which means losing one electron and gaining a positive charge. The structure of a sodium ion is an atom with 11 protons in its nucleus and 10 electrons in its orbital’s.
5. What is a voltage- gated sodium ion channel? What is it made of? What is its function?
A sodium channel is a place where the membrane on a nerve cell can open up and let sodium ion in. In a voltage gated sodium...

...﻿Manuel, Marie Mar C.
BS Psych 2
Neurons
Like muscle cells, neurons (nerve cells) possess electrical excitability, the ability to respond to a stimulus and convert it into an action potential. A stimulus is any change in the environment that is strong enough to initiate an action potential. An action potential (nerve impulse) is an electrical signal that propagates (travels) along the surface of the membrane of a neuron. It begins and travels due to the movement of ions (such as sodium and potassium) between interstitial fluid and the inside of a neuron through specific ion channels in its plasma membrane. Once begun, a nerve impulse travels rapidly and at a constant strength.
Parts of a Neuron
Most neurons have three parts: (1) a cell body, (2) dendrites, and (3) an axon. The cell body, also known as the perikaryon or soma, contains a nucleus surrounded by cytoplasm that includes typical cellular organelles such as lysosomes, mitochondria, and a Golgi complex. Dendrites are the receiving or input portions of a neuron. The plasma membranes of dendrites (and cell bodies) contain numerous receptor sites for binding chemical messengers from other cells. Dendrites usually are short, tapering, and highly branched. In many neurons the dendrites form a tree shaped array of processes extending from the cell body. The single axon of a neuron...

...﻿Krystal Barrera
Professor Judith Douglas
Dance 5
6 November 2013
Synapse
The dance performance was called Synapse Dance Theater, a Santa Monica College contemporary dance ensemble, which took place at The Broad Stage on November 6, 2013 at 4pm. In the dance performance there were twelve dance works that were remarkably different in various ways. Each work gave a different feeling and emotion while being unrelated to each other all at the same time. The choice of music had a tremendous impact on each of the dance works as well as being different from one another. The fast and slow music and the powerful and energetic choreography made Synapse what it is, a fascinating and extraordinary dance performance.
Though the entire dance performance had different styles of music and dance, most of it was a combination of modern, hip-hop and a bit classical. For example, “Dissociation” choreographed by Alberta Keys, as well as danced by Alberta Keys, showed lots of modern dance style. Instead of focusing on the structured steps, it was centered at the dancers own interpretations. As a modern dancer, she rejected the limitations of classical ballet and was more in tuned with her inner feelings giving the audience an image and an understanding of which she was losing in her own memories she tried to avoid and at the same time being frightened of facing reality. Turning against the structure techniques, Key’s movements were more relaxed...

...DAMAGED NEURONS
(Possible cures and relief for millions of people)
Normally, neurons in the central nervous system (the brain and spinal cord) cannot regenerate injured nerve fibers, limiting people's ability to recover from brain or spinal cord injuries. Repair of the central nervous system and restoration of voluntary motor activity through axonal re-growth has long been considered impossible in mammals. Over the last decade, numerous attempts proved disappointing overall. While repair of the central nervous system has long been considered impossible have just developed some strategy in the past two years that could promote neuronal regeneration after injury
1. Regeneration of the corticospinal system- Restoring these axons is an essential step that in one day enabling patients to regain voluntary movement after spinal cord injury.
2. In the event of spinal injury or lesion, astrocytes proteins isolate the damaged neuron to prevent interference with the operation of the central nervous system.
3. With further research, scientist hope to work towards identifying ways in which Schwann cells and c-Jun could be used to repair the spinal cord,
4. The biomimetic polymers- This technique would use a biodegradable polymer containing a chemical group that mimics the neurotransmitter acetylcholine to spur the growth of neurites, and then it would guide the growth of the regenerating nerve.
5. Damaged nerves are...